Central Thailand

Tom Yum Goong

Hot, sour, salty, sweet — Thailand's most famous soup, built on shrimp heads and a triangle of lemongrass, galangal, kaffir lime leaf.

In repertoire since Nov 2025

Photograph of Tom Yum

Four tastes, one spoonful.

Western cuisines reach for one or two flavour axes at a time. Thai food expects four — *priao* (sour), *khem* (salty), *phet* (spicy), *waan* (sweet) — to coexist in active argument in every bite. Tom yum is the dish that teaches you what that balance feels like; once you've calibrated for it, every other Thai soup is easier to read.

2 · Plant

Then, the plants.

Each ingredient held water and minerals, built sugar out of light over weeks or months, ripened, and was picked. A few ingredients (salt, water) came from a different elemental story.

  • Ingredient

    Large head-on prawns

    500 g large head-on prawns (or substitute body-on shrimp + extra shells)

    The heads are the dish — they hold the fat and roe that makes the broth orange and rich. Don't discard.

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  • Ingredient

    Bird's eye chiles

    4–8 bird's eye chiles, lightly bruised

    Bruised, not chopped. They sit in the broth and donate their heat; the diner spoons around them.

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  • Ingredient

    Shallots

    4 small shallots, bruised (left whole)

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  • Ingredient

    Straw mushrooms

    200 g straw mushrooms, halved (or oyster mushrooms)

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  • Ingredient

    Cherry tomatoes

    8 cherry tomatoes, halved (optional)

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  • Ingredient

    Nam prik pao

    2 tbsp nam prik pao (Thai roasted chili paste)

    Sweet-smoky roasted chili paste in oil. Adds depth and the characteristic orange tint.

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  • Ingredient

    Palm sugar

    1 tsp palm sugar (or light brown sugar)

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  • Ingredient

    Lime juice

    60 ml fresh lime juice (juice of 3 limes)

    Added off-heat. Boiled lime juice turns metallic.

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  • Ingredient

    Cilantro

    1 small bunch cilantro, leaves picked

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3 · Cook

Then, the kitchen.

Heat, time, salt, fat, acid — the recipe that turns the ingredients into something more than their sum.

4 · Plate

Central Thailand

Tom Yum Goong

Hot, sour, salty, sweet — Thailand's most famous soup, built on shrimp heads and a triangle of lemongrass, galangal, kaffir lime leaf.

The dish I make most often when something needs to taste like food in fifteen minutes — there’s no slow build here, no overnight marinade, no long simmer. Tom yum rewards confidence: trust the proportions, trust the order, trust that lime goes in last.

The hardest thing to teach a Western kitchen is the lime-at-the-end rule. Most American and European soups want all flavours added together and simmered; Thai cooking treats acid as a finishing ingredient, like a French butter mount, and the difference between a soup with cooked-in lime and one with off-heat lime is visible in the second sip.

Lime goes in off-heat.

Boiling lime juice flattens it. The final squeeze is what turns the broth from a fragrant shrimp stock into a tom yum — and it has to land in a hot bowl, not a hot pot.